CN106795968A - Sealing arrangement system with bolster - Google Patents
Sealing arrangement system with bolster Download PDFInfo
- Publication number
- CN106795968A CN106795968A CN201580037631.3A CN201580037631A CN106795968A CN 106795968 A CN106795968 A CN 106795968A CN 201580037631 A CN201580037631 A CN 201580037631A CN 106795968 A CN106795968 A CN 106795968A
- Authority
- CN
- China
- Prior art keywords
- bolster
- potted component
- arrangement system
- sealing arrangement
- machine element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sealing Devices (AREA)
- Vibration Prevention Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of sealing arrangement system (10), the sealing arrangement system includes：First machine element (12) and the second machine element (14), the two machine elements are spaced in the case where seal clearance (28) is constituted to turn up the soil and can be set with translating relative to each other motion along axis of movement (16)；Potted component (24) with seal lip (26), the potted component is at least partially disposed in the retention groove (20) of first machine element (12) and the potted component is for the high-pressure area (H) sealing low pressure region (N) relative to sealing arrangement system；Can caoutchouc elasticity ground deformation pretension element, the pretension element be arranged in retention groove (20) and the pretension element be used for make potted component (24) with its seal lip (26) pretension on the sealing surface (28) of the second machine element (14)；The bolster of the elastically deformable for being used to axially supporting potted component (24) with least one, the bolster is in axial direction at least partially disposed in being arranged between the groove side (30) of low-pressure side and potted component (24) of retention groove (20).Free space (42) is constituted between the bolster (36) and the sealing surface (28) of the second machine element (14), the free space is radially limited by the sealing surface (28) of the second machine element and the inwall (40) towards sealing surface (28) of bolster (36).
Description
Technical field
The present invention relates to a kind of sealing arrangement system, the sealing arrangement system includes the first machine element and the second machine
Element, described two machine elements are spaced in the case where supported clearance or seal clearance is constituted to turn up the soil, can be along moving
Axis is set with translating relative to each other motion.The sealing arrangement system has the potted component with seal lip, described
Potted component is at least partially disposed in two machine elements in a retention groove for machine element and by packing cloth
The high-pressure area for putting system seals relative to the area of low pressure of sealing arrangement system.The pretension of caoutchouc elasticity is set in retention groove
Element, the pretension element is used to make potted component with its seal lip relative to another machine unit in two machine elements
The sealing surface pretension of part.
Background technology
This sealing arrangement system is widely used in practice, and for a long time for example in the actuating of damper and hydraulic pressure
This sealing arrangement system is set up in device.
The sealing arrangement system lifetim fatefully depends on the durability of used potted component.
Potted component often bears mechanical load high in the operation of sealing arrangement system.Therefore, sealing arrangement system
The pressure-loaded of high-pressure area or the translational relative movement of two machine elements cause the mechanical load this high of potted component,
So that potted component may in its region being arranged on the groove side of low-pressure side for abutting in retention groove excessive stand under load and
Possibly even it is plastically deformed.In extreme circumstances, it is close between potted component is squeezed into two machine elements under load effect
In envelope gap.Generally, this sealability to potted component is that function that is unfavorable and may causing potted component is complete
Lose.In practice, can be for example made by fluorubber (FKM) or by the polytetrafluoroethylene (PTFE) (PTFE) that can bear higher thermal load
Potted component therefore must be designed with sufficiently large size, so as to fully bear the load for producing in operation
Lotus.However, the larger size of potted component may cause the shrinkage characteristic of potted component to deteriorate again.Result is probably potted component
Coefficient of friction deteriorates and sealability deteriorates in low-temperature region.
The content of the invention
Therefore, task of the invention is, so improves the sealing arrangement system mentioned when starting and is provided with described close
Seal the damper or hydraulic actuator of arrangement system so that the potted component of the sealing arrangement system is subject to more preferable in operation
Protection, in case excessively stand under load so that potted component can be designed with when not changing in the life-span of potted component it is less
Size and if necessary can by with for example relative to PTFE further improve it is coefficient of friction, for mechanical load resistance
The less material of ability is made.
Be related to the task of sealing arrangement system by the sealing arrangement system with the feature for being given in claim 1 come
Solve.There is the feature for being given as claimed in claim 11 according to damper of the invention or hydraulic actuator.
Expansion scheme of the invention is the theme of specification, dependent claims and the embodiment being shown in the drawings.
According to the present invention, sealing arrangement system has the bolster of elastically deformable, for axially support potted component, institute
State bolster along axis of movement direction, be in axial direction at least partially disposed in the groove side of retention groove low-pressure side and close
Between envelope element.Here, the bolster is by the material smaller with the elastic modelling quantity resilience in comparison modulus of the material of potted component
It is made.
Potted component can be under the running status of the pressure-loaded of sealing arrangement system or in potted component with two
The relative motion of machine element is supported on bolster when moving axially (taking) towards the direction of the low-pressure side of sealing arrangement system.
Here, bolster potted component to bolster effect axial orientation thrust in the case of due to bolster and potted component
Material compared to less elastic modelling quantity and elastic deformation.Thus, even if in high pressure or super-pressure application or in two machines
When the translational relative movement of element has high acceleration value, the overload of potted component and consequential damage also can be reliably prevented
It is bad.Additionally, potted component can be generally designed to size smaller, that is, be configured with than without this bolster
In the case of achieved smaller cumulative volume.This is favourable in terms of the shrinkage characteristic of potted component.Additionally, sealing unit
Part can be made by the mechanical load less material of resistance ability, and this is not to negative effect from the life-span of potted component.Cause
This, potted component can be made up (constitute) of such material, on the one hand, the material is distinguished by especially low friction
Coefficient, but the material is still considered as uncomfortable so far due to it for the resistance of static/dynamic performance load very little
Used in the sealing arrangement system being generally noted above.Here, the coefficient of friction of reduction makes it possible to realize less loss and close
The envelope more extensive technical use scope of element.Additionally, can suppress possible in sealing arrangement system by bolster
Undesirable vibration, the vibration is (viscous by the stick-slip effect of the potted component on the sealing surface for abutting in the second machine element
Sliding characteristic) cause.
Free space is constituted between the sealing surface of bolster and the second machine element, the bolster is loaded with close at it
Can be resiliently deformed towards the direction of the second machine element during the thrust that the direction axially towards low-pressure side of envelope element is pointed to
Into in the free space.Therefore, the free space ensure that the bolster can freely be stretched transverse to axis of movement
Exhibition.The free space is radially limited by the sealing surface of the second machine element and the inwall towards sealing surface of bolster
It is fixed.In other words, the free space is continuously extended to the sealing surface of the second machine element by the inwall of bolster.Free space
Refer to a spatial volume of sealing arrangement system, solid is not provided with the spatial volume, sealing arrangement is not provided with
The component of system.Deformation space needed for generally thus providing the cushioning effect of bolster.Additionally, it is possible thereby to sealing
Element relative to bolster thrust proportionally, i.e. with the environmental pressure being present in the high-pressure area of sealing arrangement system
Proportionally increasing bolster is used for effective supporting surface of potted component.
According to the present invention, it is achieved in for overload or damages the protection further improved to potted component, i.e. buffering
Part at least in axial direction partly covers seal clearance under the pressure-loaded state of sealing arrangement system (or high-pressure area).
In this case, bolster has obtained the additional function of barrier element, by the barrier element seal clearance can be made to exist
Dynamically, i.e. relatively partly separated with the thrust being applied on bolster in its clear span.Thus, particularly in height
Potted component plastic deformation can be reliably eliminated in pressure or super-pressure application close into what is constituted between two machine elements
Danger, i.e. potted component in envelope gap is expressed into the danger in seal clearance.
According to the present invention, bolster is particularly and can be configured to so that exist in the high-pressure side of sealing arrangement system advance
When given maximum pressure is loaded, when there is potted component to the maximum thrust of bolster, bolster does not contact the second machine
The sealing surface of device element.Otherwise, bolster may influence two relative movements of machine element.
According to the present invention, bolster can have polygonal, circular, elliptical or oval shape shape of cross section or its
Its shape of cross section.
Bolster can be disposed entirely within inside retention groove in the state of its not stand under load.In other words, bolster at it not
The groove side of low-pressure side will not be protruded from the state of stand under load towards the direction of the second machine element transverse to axis of movement.
In the case of simplest in structure, bolster is in the state of not stand under load preferably with it away from the second machine element
End along being abutted on the first machine element perpendicular to the direction of axis of movement.For bolster, the first machine element is at this
It is used as bearing in the case of kind, so that bolster is relatively and low abutting in by the compression that potted component occurs axial direction with it
The main Direction distortion towards the second machine element in the case of pressing on the groove side of side.According to of the invention one each preferred implementation
Mode, bolster can recline or be supported on the first machine element convex shoulder on or the bottom land of retention groove on.
Certainly, bolster directly (closely) or via pretension element can be supported on the first machine element.
In terms of manufacturing technology it is verified advantageously, bolster is loosely arranged on or inserts in retention groove.
According to the present invention, bolster can particularly construct integral with pretension element.This is in terms of cost and examines
It is favourable to consider the assembling of simplified sealing arrangement system.
According to a kind of expansion scheme of the invention, bolster can be partially secured on potted component or be fixed on holding
On the groove side of the low-pressure side of groove.
According to the present invention, potted component is arranged in retention groove in which can have axial gap.Thus, it is possible to adjust as needed
The response characteristic of whole sealing arrangement system or potted component.
The necessary pressure of possibility between low-pressure side and high-pressure side for sealing arrangement system repays (so-called pressure conversion
Position), potted component can have pressure compensation channel, can be by low-pressure side and high pressure side liquid by the pressure compensation channel
Connection.
According to a kind of expansion scheme of the invention, potted component has a support section, the support section with towards high pressure
The seal land edge axially spaced-apart of side is turned up the soil setting, and potted component can be supported on sealing surface by the support section
On.
Bolster can particularly be made up of the material of energy constancy of volume ground elastic deformation.Thus, it is possible to transverse to motion
Axis simply realizes the deformation being directly proportional to the pressure load of bolster of bolster.Here, bolster particularly can be by
Elastomer is made.Certainly, elastomer can have additive, such as fiber and/or metallic particles, to adjust as needed
The load-bearing capacity mechanically or thermally of elastomer.
According to a kind of alternate embodiment of the invention, the material of bolster can have compressible air gas inclosure portion or
Gas gas inclosure portion, particularly carbon dioxide gas inclosure portion, nitrogen gas inclosure portion or other inert gas gas inclosure portions.The material of damping element
Constancy of volume ground elastic deformation is unable in this case.
Potted component can particularly be made up of polytetrafluoroethylene (PTFE) or other fluoropolymers, the copolymer of particularly fluorination,
The copolymer preferably includes PTFE monomers.Certainly, materials set forth above can also include additive.
According to the present invention, one of machine element of described two machine elements can be configured to housing or cylinder body, and
Corresponding another machine element is configured to the piston rod being directed in housing/cylinder body in described two machine elements.Sealing
Element is configured to radial sealing elements in this case.Here, pretension element and bolster preferably have the annular shape of closure
Shape.
Can be used in many technology components according to sealing arrangement system of the invention.Therefore, it is proposed, according to the invention, especially
It is that shock absorber or damper in engineering truck, hydraulic actuator or hydraulic unit driver can have packing cloth described above
Put system.
Sum it up, the present invention relates to a kind of sealing arrangement system, the sealing arrangement system includes：
- the first machine element and the second machine element, described two machine elements phase in the case where seal clearance is constituted
Mutually set at interval and be arranged to be translated relative to each other along axis of movement and move；
- the potted component with seal lip, the potted component is at least partially disposed in first machine element
Retention groove in and the potted component be used for relative to sealing arrangement system high-pressure area (H) sealing low pressure region (N)；
- pretension the element that can deform, the pretension element is arranged in the retention groove and described pre- caoutchouc elasticity
Tight element be used for by potted component with its seal lip the pretension on the sealing surface of the second machine element；With
The bolster of-at least one elastically deformable, for axially supporting potted component, the bolster is square vertically
To being at least partially disposed in being arranged between the groove side of low-pressure side and potted component of retention groove, and the bolster by
The material smaller with the elastic modelling quantity resilience in comparison modulus of the material of potted component is made.
Brief description of the drawings
Below by illustrating the present invention in the embodiment being shown in the drawings.Showing each component functionally in figure
The mode of mating reaction each component is shown.
In figure：
Fig. 1 shows the first embodiment according to sealing arrangement system of the invention, the sealing in the state of non-stand under load
Arrangement system has two machine elements, the spaced setting of turning up the soil in the case where seal clearance is constituted of the two machine elements
And motion can be translated relative to each other, wherein, the high-pressure area H and area of low pressure N of sealing arrangement system are by being arranged on guarantor
The potted component held in groove is sealed relative to each other, and potted component is equipped with bolster, and potted component can be by described slow
Stamping is supported on the groove side of the low-pressure side of retention groove；
Fig. 2 illustrates the sealing arrangement system of the Fig. 1 under pressure-loaded running status with local section view；
Fig. 3 illustrates another embodiment of sealing arrangement system with local section view；
Fig. 4 illustrates another embodiment of sealing arrangement system with local section view；
Fig. 5 illustrates another embodiment of sealing arrangement system with local section view；
Fig. 6 illustrates another embodiment of sealing arrangement system with local section view, delays in the sealing arrangement system
Stamping has the inner side of arch；
Fig. 7 illustrates sealing arrangement system with local section view, and bolster is configured to two sides in the sealing arrangement system
Convex；
Fig. 8 illustrates sealing arrangement system with local section view, and bolster has circle in the sealing arrangement system
Or substantially circular shape of cross section；
Fig. 9 illustrates sealing arrangement system with local section view, and pretension element is taken vertically in the sealing arrangement system
Connect potted component；
Figure 10 illustrates sealing arrangement system with local section view, and potted component is provided with pressure in the sealing arrangement system
Compensation passage and support section；
Figure 11 shows have according to the hydraulic actuator of sealing arrangement system of the invention.
Specific embodiment
Fig. 1 illustrates sealing arrangement system 10 with local section view.Sealing arrangement system 10 includes the first machine element 12
With the second machine element 14.Two machine elements 12,14 are arranged to be translated relative to each other along axis of movement 16 and move.The
One machine element 12 is for example configured to housing, and the second machine element 14 is configured to the piston rod being directed in the housing.Two
The spaced setting of turning up the soil of machine element 12,14, so as to constitute supporting in known manner between two machine elements 12,14
Gap or seal clearance 18.
First machine element 12 has retention groove 20.Pretension element 22 and the sealing of caoutchouc elasticity are set in retention groove 20
Element 24.Pretension element 22 and potted component 24 are respectively configured to annular.Potted component 24 has rectangle in the current situation
Shape of cross section, but can also have other shape of cross sections unlike this.
Pretension element 22 be used to making potted component 24 with its seal lip 26 towards the direction pretension of the second machine element and
Pretension is on the sealing surface 28 of the second machine element 14.Therefore, potted component 24 is pre- tightly hermetically abuts in the second machine unit
On the sealing surface 28 of part 14.Sealing arrangement system 10 with H mark high-pressure area and sealing arrangement system 10 with N mark
Area of low pressure is sealed relative to each other by potted component 24.
Retention groove 20 can it is simplest in structure in the case of there is the shape of cross section of rectangle, such as figure 1 illustrates
As.Retention groove 20 include be arranged on low-pressure side groove side 30 and be arranged on high-tension side groove side 32, the two groove sides
Face is connected with each other by bottom land 34.Pretension element 22 is abutted on bottom land 34 and along the radial direction branch on axis of movement 16
Support is on bottom land.
As shown in figure 1, potted component 24 is arranged in retention groove 20 with having axial gap.Alternatively, potted component 24
In axial direction shape can be arranged to be maintained in locking manner in retention groove 20.
Sealing arrangement system 10 has the bolster 36 of elastically deformable.Bolster 36 is set along the direction of axis of movement 16
In being arranged between the groove side 30 of low-pressure side and potted component 24 for retention groove 20.
Bolster 36 makes it possible to support potted component 24 in low-pressure side and make it possible to cushion seal element 24 towards retention groove
The axial movement in the direction of the 20 groove side 30 for being arranged on low-pressure side.
Bolster 36 is abutted on the pretension element 22 of caoutchouc elasticity simultaneously with its end 38 away from the second machine element 14
It is supported on the bottom land 34 of the retention groove 20 of the first machine element 12 via pretension element 22 (spring ground).
Bolster 36 can be loosely put into retention groove 20, and is for example configured to relative to first in the current situation
The pretension element 22 and the single component of potted component 24 of machine element 12, caoutchouc elasticity.
Bolster 36 is by the elastically deformable smaller with the elastic modelling quantity resilience in comparison modulus of the material of potted component 24
Material is made.Therefore ensure that, high-pressure area H be stressed loading and potted component 24 be pressed to therewith on bolster 36 when, delay
Stamping 36 is easier to deform than axially supporting the potted component 24 on bolster.
The material of bolster 36 is without (big) gas gas inclosure portion or air gas inclosure portion and therefore can constancy of volume ground
Elastic deformation.
The material of potted component 24 for example can be the fluoropolymer material of elasticity, the copolymer of particularly fluorination.Certainly,
The material of potted component can include so-called additive.
Under the running status of the not stand under load of sealing arrangement system 10, bolster 36 is disposed entirely within the interior of retention groove 20
Portion.Therefore, bolster 36 is not with the inwall 40 of the sealing surface 28 of its second machine element 14 of direction towards the direction of sealing surface 28
Protrude from the groove side 30 for being arranged on low-pressure side of retention groove 20.In other words, the internal cross section (not shown) of bolster 36 exists
More than the first machine element 12 by cross section (not shown) under the running status of the not stand under load of sealing arrangement system 10.
Free space 42 is constituted between the sealing surface 28 of the machine element 14 of bolster 36 and second.Free space 42 refers to
One spatial volume of sealing arrangement system, solid is not provided with the spatial volume, sealing arrangement system is not provided with
10 component.Free space 42 continuously extends to the sealing surface 28 of the second machine element 14 from the inwall 40 of bolster 36
And radially limited by the two components.
In the state of the not stand under load of sealing arrangement system 10 and high-pressure area H, potted component 24 is towards the side of bolster 36
Move or compress to bolster to and with thrust F.Bolster 36 abuts in and is arranged on the groove side 30 of low-pressure side and leads to
Thrust F is crossed in axial direction to compress.Thus, bolster 36 becomes transverse to axis of movement 16 towards the direction of the second machine element 14
Shape, therefore radially deform into the free space 40 of sealing arrangement system.
When with maximum operating pressure to high-pressure area H pressure-loadeds, seal clearance 18 is square vertically by bolster 36
To partly covering, as shown in following Fig. 2.
In free space 18 being deformed into due to bolster 36, the effective supporting surface for potted component 24 of bolster 36
44 increase with proportional pressure ground.Here it is possible to passing through partly to cover vertically seal clearance 18 reliably prevents sealing unit
Part is damaged or is extruded in seal clearance 18.
Fig. 2 is shown in the state of high-pressure area H is stressed loading and Fig. 1 when on high-tension side operating pressure is maximum
Sealing arrangement system 10.Potted component 24 is abutted on bolster 36 with the side wall 46 of its low-pressure side and is supported on bolster 36
On.Bolster 36 relative to sealing arrangement system (and bolster 36) figure 1 illustrates not loaded state by sealing unit
Part 24 in axial direction compresses and transverse to axis of movement 16, radially deform into free space 42.
As shown in Figure 2, bolster 36 stretches out towards the direction of the sealing surface 28 of the second machine element 14 from retention groove.Cause
This, seal clearance 18 is in axial direction partly covered by bolster 36.Thus, pressure of the bolster in sealing arrangement system 10
It is used as the mechanical stop element for potted component 24 under the running status of loading, sealing unit can be prevented by the barrier element
Part 24 is undesirably plastically deformed (being extruded) in seal clearance 18.
It should be noted that when there is maximum operating pressure on the high-pressure side H of sealing arrangement system 10, bolster 36
Inwall 40 is set at interval with the sealing surface 28 of the second machine element.Thus two machine elements 12,14 be reliably avoid
Between frictional force undesirably improve.
Fig. 3 shows another implementation method of sealing arrangement system 10, the implementation method and the embodiment being presented in Fig. 1
Differ primarily in that, bolster 36 directly, is i.e. closely supported on the first machine element 12.Bolster can particularly recline
On the bottom land 34 of the retention groove 20 of the first machine element 12, and at least compressing slow by the axial orientation of potted component 24
During stamping, bolster is supported on bottom land.Bolster 36 is closed in the not stand under load running status lower edge shown in sealing arrangement system 10
Seal clearance 28 is extended nearly in the radial direction of axis of movement 16.In other words, bolster 36 has in the state of not stand under load
There is the internal cross section (not shown) by cross section (not shown) more than the first machine element 12.
Bolster 36 and figure 1 illustrates sealing arrangement system same configuration into the pretension element 22 with caoutchouc elasticity with
And the component that potted component 24 is separate.
Potted component 24 has seal lip 26, and the seal lip has on high-tension side contact surface angle [alpha] 1 and low-pressure side
Contact surface angle [alpha] 2, α 1, α 2 both less than 90 °.On high-tension side contact surface angle [alpha] 1 is preferably greater than the contact surface angle [alpha] of low-pressure side
2。
Another embodiment of sealing arrangement system 10 is illustrated with local section view in fig. 4.Bolster 36 and rubber
The pretension element 22 of elasticity is configured to what is be mutually integrated in this embodiment.Potted component 24 exemplarily has the horizontal stroke of rectangle
Cross sectional shape.Certainly, potted component can also have other shape of cross sections, for example figure 3 illustrates shape of cross section.
Fig. 5 shows another embodiment of sealing arrangement system 10, wherein, the partly portion radially outward of potted component 24
Overlap joint bolster 36.Therefore, bolster is radially supported on potted component 24.
The pretension element 22 that can deform can also have other shape of cross sections caoutchouc elasticity in principle.
In the sealing arrangement system 10 according to Fig. 6, pretension element 22 under its loaded state have substantially egg type or
Oval shape of cross section.Shown in embodiment according to sealing arrangement system 10 of the invention as shown in fig. 6
Like that, bolster can have the inwall 40 of arch.
According to an expansion scheme of the invention, bolster 36 can also be configured to plano-convex or biconvex.On two sides
In the case of convex, the groove abutment face 48 opposite with bolster 36 of supporting surface 44 is bent outwardly, such as figure 7 illustrates sealing
As being shown in arrangement system 10.
As described in the figure 7, pretension element 22 can have substantially circular shape of cross section.
Fig. 8 shows another sealing arrangement system 10, and wherein potted component 24 is in the on high-tension side surface district of potted component 24
Stepped is constructed in domain.
As this figure 9 illustrates sealing arrangement system 10 as, pretension element 22 can in axial direction in high pressure
Side lap seal element 24.In this case, pretension element 22 itself serves as the high-pressure side bolster of potted component.Thus,
Sealing arrangement system 10 operation when using, potted component when being moved towards on high-tension side direction (such as in high-pressure side H and low
Between pressure side N when there is the pressure balance of short time) can also be protected, to prevent rigid touching on groove side 32 simultaneously
Thereby result in damage.
According to figure 10 illustrates sealing arrangement system 10 implementation method, potted component 24 can also be provided with pressure benefit
Repay passage 50.Pressure compensation channel 50 can particularly extend through potted component 24 and be opened be arranged on low-pressure side first
Mouthfuls 52 and it is arranged on high-tension side second opening 54.
In the normal operation of sealing arrangement system 10, the first opening 52 of pressure compensation channel 50 passes through pretension element 22
Or as shown in Figure 10 by bolster 36 relative to low-pressure side N sealings.Exceed in high-pressure side in pressure present on low-pressure side N
In the case of pressure present on H, potted component 24 or bolster 36 can be by the pressures between low-pressure side N and high-pressure side H
Direction movement axially towards high-pressure side H drops in power.Thus, it is possible to realize the first opening 52 and low-pressure side of pressure compensation channel 50
The fluid communication of N.The pressure compensation between low-pressure side N and high-pressure side H can be realized by this way.
According to a kind of expansion scheme of the invention, potted component 24 can have figure 10 illustrates support section 56,
The support section is in axial direction set at interval in high-pressure side with sealing seamed edge 26.Support section can partly abut in the
On the sealing surface 28 of two machine elements 14.
Described in detail by the function of sealing arrangement system 10 of the invention below with reference to Fig. 1 to 5：
In the high-pressure area H of pressure-loaded sealing arrangement system 10 or the second machine element 14 along direction R relative to
When potted component 24 is moved, potted component 24 is compressed and is pressed on bolster axially towards bolster 36.Potted component 24
Support is on bolster 36.Bolster 36 presses to the groove side 30 of the low-pressure side of retention groove 20 by potted component 24 with thrust F
And in axial direction compressed due to its elastic modelling quantity smaller relative to the material of potted component.Here, bolster 36
Radially towards the Direction distortion (Fig. 2) of the sealing surface 28 of the second machine element 14.Bolster 36 is at least with maximum operation pressure
Power is stretched out from retention groove 20 during the high-pressure side H of pressure-loaded sealing arrangement system 10.Thus, bolster 36 partly separates
The seal clearance 18 of (covering) between two machine elements 12,14 in axial direction.Thus, bolster 36 is used as dynamic resistance
Gear element, prevents potted component 24 to be plastically deformed and be thus damaged/destroy, or prevent potted component by the barrier element
It is extruded in the seal clearance 18 constituted between two machine elements 12,14 along the direction of axis of movement 16.Thus, according to
In sealing arrangement system of the invention, potted component 24 can generally be designed with less size and/or by such
Material is made, and resistance ability of the material to mechanical load compared with usually used polytetrafluoroethylene (PTFE) is smaller.Therefore, seal
Element 24 is particularly by other fluoropolymers or fluorinated copolymers small relative to polytetrafluoroethylene (PTFE) more coefficient of friction, for example has
The fluorinated copolymers of PTFE monomeric units are constituted.
The damper or hydraulic pressure that Figure 11 is exemplarily illustrated according to sealing arrangement system 10 of the invention in single effect are caused
Use in dynamic device 100, the damper or liquid braking device can be used in engineering truck or engineering machinery.
Actuator 100 includes sealing arrangement system 10 described above.Shown sealing arrangement system 10 is purely illustratively
With with figure 1 illustrates the corresponding mode of sealing arrangement system constituted.It should be noted that the first of sealing arrangement system 10
Machine element 12 is configured to piston rod in the current situation, and the second machine element 14 of sealing arrangement system 10 is configured to hydraulic pressure
Cylinder.
As shown in figure 11, potted component 24 and pretension element 22 are arranged in the retention groove 20 of piston rod.
Hydraulic linear motor 100 use 102 mark adapter be used for transportation work fluid, for application piston bar, i.e. use
Moved relative to hydraulic cylinder in the direction of motion or operative orientation for piston rod is continued to use R marks.Hydraulic actuator 100 is in hydraulic cylinder
With on piston rod have immobilising device 104, for actuator to be fixed on into two components that can be movable with respect to each other.
Certainly, damper or hydraulic actuator 100 can also be configured to two-way function.In such a case, it is possible to
Hydraulic fluid loads two mutually opposing piston areas, so that actuator 100 has the direction of motion or the work side of two actives
To R.Sealing arrangement system 10 can have the second bolster in this case, and the second bolster is axially arranged on high-pressure side
Groove side and potted component 24 between.
Sealing arrangement system 10 above in conjunction with the explanations of Fig. 1 to 11 can also be used in other technical pattern elements, example
Such as used in particularly the damper of motor vehicle or shock absorber is used for.
Claims (11)
1. sealing arrangement system (10), the sealing arrangement system includes：
- the first machine element (12) and the second machine element (14), first machine element and the second machine element are being constituted
It is spaced in the case of seal clearance (28) to turn up the soil and be set with translating relative to each other motion along axis of movement (16)；
- the potted component (24) with seal lip (26), the potted component is at least partially disposed in first machine
In the retention groove (20) of element (12) and the potted component be used for relative to sealing arrangement system high-pressure area (H) seal
Area of low pressure (N)；
- pretension the element that can deform, the pretension element is arranged in retention groove (20) and the pretension unit caoutchouc elasticity
Part is used to make pretension on sealing surface (28) of the potted component (24) with its seal lip (26) to the second machine element (14)；With
- at least one be used for axially support potted component (24) elastically deformable bolster, the bolster is vertically
Direction is at least partially disposed in being arranged between the groove side (30) of low-pressure side and potted component (24) of retention groove (20),
Wherein, free space (42) is constituted between the bolster (36) and the sealing surface (28) of the second machine element (14),
By the inwall (40) towards sealing surface (28) of the sealing surface (28) of the second machine element and bolster (36) radially
The free space is limited,
Wherein, the bolster is in axial direction compressed simultaneously when high-pressure area (H) is stressed loading by potted component (24)
And can Free Transform enter the free space in, wherein, high pressure of the bolster (36) in sealing arrangement system (10)
In axial direction partly covering seal clearance (18) in the state of the pressure-loaded in region (H), and,
The bolster (36) is made up of the material smaller with the elastic modelling quantity resilience in comparison modulus of the material of potted component (24).
2. sealing arrangement system according to claim 1, it is characterised in that the bolster (36) is with it away from the second machine
The end (38) of device element (14) is supported on the first machine element (12).
3. sealing arrangement system according to claim 2, it is characterised in that the bolster (36) is directly or via pretension
Element (22) is supported on the first machine element (12).
4. according to the sealing arrangement system that one of the claims are described, it is characterised in that the bolster (36) is loosely
It is arranged in retention groove (20).
5. according to the sealing arrangement system that one of the claims are described, it is characterised in that the bolster (36) and pretension
Element (22) construction is integral.
6. according to the sealing arrangement system that one of the claims are described, it is characterised in that the bolster (36) is fixed on
On potted component (24) or it is fixed on the groove side (30) of the low-pressure side of retention groove (20).
7. according to the sealing arrangement system that one of the claims are described, it is characterised in that the bolster (36) is by energy body
The elastomer that product unchangeably deforms is made.
8. according to the sealing arrangement system that one of the claims are described, it is characterised in that the potted component (24) is by gathering
Tetrafluoroethene is made or is made up of other fluoropolymers, particularly fluo-copolymer.
9. according to the sealing arrangement system that one of the claims are described, it is characterised in that the potted component (24) has axle
To being arranged on gap in retention groove (20).
10. according to the sealing arrangement system that one of the claims are described, it is characterised in that described two machine elements (12,
14) one of machine element is configured to cylinder, and another machine element in described two machine elements (12,14) is constructed
It is the piston rod being directed in cylinder, wherein, the potted component (36) is radial sealing elements.
11. dampers or hydraulic actuator (100), with according to the described sealing arrangement system of one of the claims
(10)。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014216268.8A DE102014216268A1 (en) | 2014-08-15 | 2014-08-15 | Sealing arrangement with attenuator |
| DE102014216268.8 | 2014-08-15 | ||
| PCT/EP2015/068546 WO2016023946A1 (en) | 2014-08-15 | 2015-08-12 | Seal arrangement with damping element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106795968A true CN106795968A (en) | 2017-05-31 |
| CN106795968B CN106795968B (en) | 2019-09-10 |
Family
ID=54011014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580037631.3A Active CN106795968B (en) | 2014-08-15 | 2015-08-12 | Sealing arrangement system with bolster |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US10690213B2 (en) |
| EP (1) | EP3180550B1 (en) |
| JP (1) | JP6482647B2 (en) |
| KR (1) | KR102003887B1 (en) |
| CN (1) | CN106795968B (en) |
| DE (1) | DE102014216268A1 (en) |
| DK (1) | DK3180550T3 (en) |
| ES (1) | ES2693084T3 (en) |
| PL (1) | PL3180550T3 (en) |
| TR (1) | TR201819343T4 (en) |
| WO (1) | WO2016023946A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679150A (en) * | 2018-05-22 | 2018-10-19 | 合肥诚泽机械制造有限责任公司 | A kind of dust protected automobile absorber |
| CN110799731A (en) * | 2017-07-03 | 2020-02-14 | 诺沃皮尼奥内技术股份有限公司 | Method of providing a seal and sealing system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10223066B2 (en) | 2015-12-23 | 2019-03-05 | Apple Inc. | Proactive assistance based on dialog communication between devices |
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- 2015-08-12 JP JP2017506652A patent/JP6482647B2/en active Active
- 2015-08-12 DK DK15756124.2T patent/DK3180550T3/en active
- 2015-08-12 CN CN201580037631.3A patent/CN106795968B/en active Active
- 2015-08-12 PL PL15756124T patent/PL3180550T3/en unknown
- 2015-08-12 KR KR1020177007014A patent/KR102003887B1/en active IP Right Grant
- 2015-08-12 EP EP15756124.2A patent/EP3180550B1/en active Active
- 2015-08-12 ES ES15756124.2T patent/ES2693084T3/en active Active
- 2015-08-12 WO PCT/EP2015/068546 patent/WO2016023946A1/en active Application Filing
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| DE3425431C1 (en) * | 1984-07-11 | 1985-12-05 | Heinz Konrad Prof. Dr.-Ing. 7050 Waiblingen Müller | Shaft seal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110799731A (en) * | 2017-07-03 | 2020-02-14 | 诺沃皮尼奥内技术股份有限公司 | Method of providing a seal and sealing system |
| CN108679150A (en) * | 2018-05-22 | 2018-10-19 | 合肥诚泽机械制造有限责任公司 | A kind of dust protected automobile absorber |
| CN108679150B (en) * | 2018-05-22 | 2021-01-19 | 合肥诚泽机械制造有限责任公司 | Dust protected automobile shock absorber ware |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3180550B1 (en) | 2018-10-03 |
| DK3180550T3 (en) | 2018-11-05 |
| KR20170041908A (en) | 2017-04-17 |
| KR102003887B1 (en) | 2019-07-25 |
| JP2017526872A (en) | 2017-09-14 |
| ES2693084T3 (en) | 2018-12-07 |
| JP6482647B2 (en) | 2019-03-13 |
| US20170159740A1 (en) | 2017-06-08 |
| DE102014216268A1 (en) | 2016-02-18 |
| PL3180550T3 (en) | 2019-03-29 |
| EP3180550A1 (en) | 2017-06-21 |
| CN106795968B (en) | 2019-09-10 |
| TR201819343T4 (en) | 2019-01-21 |
| WO2016023946A1 (en) | 2016-02-18 |
| US10690213B2 (en) | 2020-06-23 |
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